CN111535718A - Anti-seismic civil air defense door - Google Patents

Anti-seismic civil air defense door Download PDF

Info

Publication number
CN111535718A
CN111535718A CN202010451073.8A CN202010451073A CN111535718A CN 111535718 A CN111535718 A CN 111535718A CN 202010451073 A CN202010451073 A CN 202010451073A CN 111535718 A CN111535718 A CN 111535718A
Authority
CN
China
Prior art keywords
air defense
defense door
door body
people
buffer
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202010451073.8A
Other languages
Chinese (zh)
Inventor
黄志聪
吴松
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wuhu Baiyi Civil Air Defence Engineering Protection Equipment Co ltd
Original Assignee
Wuhu Baiyi Civil Air Defence Engineering Protection Equipment Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Wuhu Baiyi Civil Air Defence Engineering Protection Equipment Co ltd filed Critical Wuhu Baiyi Civil Air Defence Engineering Protection Equipment Co ltd
Priority to CN202010451073.8A priority Critical patent/CN111535718A/en
Publication of CN111535718A publication Critical patent/CN111535718A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • EFIXED CONSTRUCTIONS
    • E06DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06BFIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B5/00Doors, windows, or like closures for special purposes; Border constructions therefor
    • E06B5/10Doors, windows, or like closures for special purposes; Border constructions therefor for protection against air-raid or other war-like action; for other protective purposes
    • EFIXED CONSTRUCTIONS
    • E05LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05FDEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F5/00Braking devices, e.g. checks; Stops; Buffers
    • E05F5/02Braking devices, e.g. checks; Stops; Buffers specially for preventing the slamming of swinging wings during final closing movement, e.g. jamb stops
    • EFIXED CONSTRUCTIONS
    • E05LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05FDEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F5/00Braking devices, e.g. checks; Stops; Buffers
    • E05F5/06Buffers or stops limiting opening of swinging wings, e.g. floor or wall stops
    • EFIXED CONSTRUCTIONS
    • E06DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06BFIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B1/00Border constructions of openings in walls, floors, or ceilings; Frames to be rigidly mounted in such openings
    • E06B1/04Frames for doors, windows, or the like to be fixed in openings
    • E06B1/52Frames specially adapted for doors
    • E06B1/526Frames specially adapted for doors for door wings that can be set up to open either left or right, outwards or inwards, e.g. provided with grooves for easily detachable hinges or latch plates
    • EFIXED CONSTRUCTIONS
    • E06DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06BFIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B3/00Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
    • E06B3/70Door leaves

Landscapes

  • Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Specific Sealing Or Ventilating Devices For Doors And Windows (AREA)

Abstract

The invention discloses an anti-seismic civil air defense door, which comprises a civil air defense door body, wherein the civil air defense door body is rotationally connected to a wall body through a rotating piece, the wall body is provided with a door frame matched with the civil air defense door body for use, first buffer devices are arranged at the top and the bottom of the civil air defense door body between the civil air defense door body and the door frame, one end of the civil air defense door body is far away from the rotating piece, a second buffer device is arranged at the side surface of the civil air defense door body, and the upper end of the back surface of the civil air defense door body and the front of the wall body are provided with a third buffer device, the invention arranges a first buffer device and a second buffer device between the civil air defense door body and the door frame, be equipped with third buffer between people's air defense door body and wall body, at the switch people's air defense door in-process, through multiple buffer for people's air defense door has good buffering anti-seismic performance, and barrier propterty is good and long service life.

Description

Anti-seismic civil air defense door
Technical Field
The invention relates to the technical field of civil air defense doors, in particular to an anti-seismic civil air defense door.
Background
The civil air defense door is a door of an entrance and an exit of civil protection engineering, has more distinct classification, and comprises various civil air defense devices such as a common single-leaf protective airtight door, a common double-leaf protective airtight door, an airtight door, a movable threshold single-leaf protective airtight door, a double-leaf protective airtight door, an airtight door and the like, is a door used by government mobilization and organization masses in the process of taking air defense, disaster resistance and relief measures to implement rescue and reduce the harm of disasters.
In order to meet the requirements of the functions of the civil air defense door, the size and the mass of the civil air defense door are large, so that huge inertia is generated in the door opening and closing process, great vibration is generated, the service life of the civil air defense door can be shortened if buffering and damping are not carried out, and the damage to a wall body can be caused, so that the civil air defense door with good buffering and anti-seismic performance is needed.
Disclosure of Invention
The invention aims to provide an anti-seismic civil air defense door to solve the technical problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides an antidetonation people's air defense door, includes people's air defense door body, people's air defense door body rotates through rotating to be connected on the wall body, be equipped with on the wall body with the door frame that people's air defense door body cooperation was used people's air defense door body with between the door frame, the top and the bottom of people's air defense door body all are equipped with first buffer, keep away from the one end of rotating the piece, the side of people's air defense door body is equipped with second buffer, just people's air defense door body back upper end with be equipped with the third buffer before the wall body.
Further, first buffer includes the ball, the ball exceeds half position and imbeds inside the people's air defense door body and pours integratively, the top and the bottom of people's air defense door body all imbed there are two sets of balls, just the top lower extreme of door frame and bottom upper end all be equipped with the arc wall that the ball cooperateed and use, be equipped with in the arc wall with the inconsistent elastic deformation pad of ball.
Furthermore, the second buffer device comprises a convex block, the convex block is fixed on the side face of the civil air defense door body, a groove matched with the convex block is correspondingly arranged on the door frame, a buffer rubber plate is arranged in the groove, a plurality of groups of buffer springs are arranged on the buffer rubber plate, and the buffer springs are arranged in the groove.
Furthermore, the third buffer device comprises a first connecting piece, one end of the first connecting piece is hinged to the wall body, the other end of the first connecting piece is hinged to a second connecting piece, the other end of the second connecting piece is connected with a damping piece, and the damping piece is fixed to the back face of the civil air defense door body.
Furthermore, the second connecting piece is L-shaped and is of an integrally formed structure, the downward extending part of the second connecting piece can penetrate through the damping piece and is rotatably connected with the damping piece, the downward extending part of the second connecting piece and the damping piece can rotate in a friction mode through design, resistance generated during rotation can buffer impulsive force generated when the civil air defense door is opened.
Further, the outside both sides of people's air defense door body all are equipped with the one deck guard plate, the guard plate with be equipped with damping device between the people's air defense door body, from the guard plate to the direction of people's air defense door body, damping device includes first shock attenuation board and second shock attenuation board, be equipped with a plurality of annular rubber spare, every between first shock attenuation board and the second shock attenuation board all be equipped with compression spring in the annular rubber spare.
Compared with the prior art, the invention has the beneficial effects that:
according to the invention, the first buffer device and the second buffer device are arranged between the civil air defense door body and the door frame, the third buffer device is arranged between the civil air defense door body and the wall body, and in the process of opening and closing the civil air defense door, the civil air defense door has good buffer anti-seismic performance, good protection performance and long service life through various buffer devices.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the connection relationship between the door body and the door frame of the present invention;
FIG. 3 is an enlarged view of part A of the present invention;
FIG. 4 is a schematic view of a second connector according to the present invention;
FIG. 5 is a schematic view of the shock absorbing device of the present invention.
In the figure: 1-civil air defense door body; 2-a rotating member; 3, a wall body; 4-a door frame; 5-rolling balls; 6-arc groove; 7-elastic deformation pad; 8-a bump; 9-a groove; 10-a buffer rubber plate; 11-a buffer spring; 12-a first connector; 13-a second connector; 14-a damping member; 15-protective plate; 16-a first damping plate; 17-a second damping plate; 18-an annular rubber member; 19-compression spring.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-5, an anti-seismic civil air defense door comprises a civil air defense door body 1, wherein the civil air defense door body 1 is rotatably connected to a wall body 3 through a rotating part 2, a door frame 4 matched with the civil air defense door body 1 is arranged on the wall body 3, a first buffer device is arranged at the top and the bottom of the civil air defense door body 1 between the civil air defense door body 1 and the door frame 4, one end of the civil air defense door body is far away from the rotating part 2, a second buffer device is arranged on the side surface of the civil air defense door body 1, and a third buffer device is arranged at the upper end of the back surface of the civil air defense door body 1 and in front of the wall body 3.
Referring to fig. 1-5, the first buffering device includes balls 5, more than half of the balls 5 are embedded into the civil air defense door body 1 and are poured into a whole, two groups of balls 5 are embedded into the top and the bottom of the civil air defense door body 1, arc-shaped grooves 6 matched with the balls 5 are formed in the lower end of the top and the upper end of the bottom of the door frame 4, and elastic deformation pads 7 abutting against the balls 5 are arranged in the arc-shaped grooves 6.
In this embodiment, when switch people's air defense door, ball 5 contradicts elastic deformation pad 7, and at the extrusion in-process of closing the door, elastic deformation pad 7 can produce deformation to can cushion partial impact force when closing the door, elastic deformation pad 7 bonds in arc wall 6, the change of being convenient for.
In this embodiment, ball 5 also can adopt the arc piece to replace, and the arc piece can be moulded plastics with people's air defense door body 1 and be an organic whole, also directly fixable on people's air defense door body 1.
Referring to fig. 1-5, the second buffer device includes a protrusion 8, the protrusion 8 is fixed on the side surface of the civil air defense door body 1, a groove 9 adapted to the protrusion 8 is correspondingly formed on the door frame 4, a buffer rubber plate 10 is arranged in the groove 9, a plurality of groups of buffer springs 11 are arranged on the buffer rubber plate 10, and the buffer springs 11 are installed in the groove 9.
In this embodiment, when the switch people's air defense door, buffer rubber board 10 can be touched to lug 8, and a small amount of impact force can be cushioned in the deformation that buffer rubber board 10 itself produced, buffer rubber board 10 rethread extrusion buffer spring 11, and the resilience force that buffer spring 11 produced can cushion some impact force once more, through the double cushioning effect of buffer rubber board 10 and buffer spring 11 to make people's air defense door possess good buffering anti-seismic performance.
In this embodiment, because when the civil air defense door is opened and closed, oblique impact force can be generated when the bump 8 is just contacted with the buffer rubber plate 10, so that a plastic sleeve for protecting the buffer spring 11 is arranged in the groove 9, the probability of extrusion deformation of the buffer spring 11 can be reduced, and the buffer rubber plate 10 and the buffer spring 11 can buffer acting force in different directions, specifically, the buffer rubber plate 10 can buffer acting force in the direction from the front side to the back side of the civil air defense door body 1, and the buffer spring 11 can buffer acting force in the direction of the side surface of the civil air defense door body 1.
Referring to fig. 1-5, the third buffer device includes a first connecting member 12, one end of the first connecting member 12 is hinged to the wall, the other end of the first connecting member 12 is hinged to a second connecting member 13, the first connecting member 12 and the second connecting member 13 are connected through a universal joint, the other end of the second connecting member 13 is connected to a damping member 14, and the damping member 14 is fixed to the back of the civil air defense door body 1.
The first connecting piece 12 and the second connecting piece 13 are arranged on the same horizontal plane, when the civil air defense door is opened or closed, the second connecting piece 13 can be directly hinged on the wall body 3, but the second connecting piece 13 is directly hinged on the wall body 3, and the rotation angle of the civil air defense door is limited, so that the civil air defense door is more convenient to rotate and has a larger rotation angle in the rotation process by adopting the first connecting piece 12 and the second connecting piece 13 to be hinged.
Referring to fig. 1 to 5, the second connecting member 13 is disposed in an L shape, the second connecting member 13 is an integrally formed structure, a downward extending portion of the second connecting member 13 can pass through the damping member 14 and is rotatably connected to the damping member 14, and the downward extending portion of the second connecting member 13 and the damping member 14 can be designed to rotate by friction, and the impact force generated during opening the civil air defense door can be buffered by the resistance generated during the rotation.
In this embodiment, when the switch people's air defense door, because the second connecting piece rotates with the damping part to be connected, at the rotation in-process, need consume mechanical potential energy, cushion the pulling force of people's air defense door promptly to it is more steady when making to open or close people's air defense door, can not cause too big impact to people's air defense door body and wall body.
It should be noted that, when the civil air defense door is closed, the first buffer device and the second buffer device play a main buffer role, when the civil air defense door is opened, the third buffer device plays a main buffer role, and parts which do not relate to the main points of the invention are not marked in the drawings of the specification, such as a handle for opening the civil air defense door body, a door lock and other structures.
The civil air defense door and the civil air defense door body 1 can be understood as different objects, and the civil air defense door can be understood as the combination of the civil air defense door body 1, the door frame 4 and the wall body 3.
Referring to fig. 1 to 5, a layer of protection plate 15 is disposed on each of two outer sides of the civil air defense door body 1, a damping device is disposed between the protection plate 15 and the civil air defense door body 1, the damping device includes a first damping plate 16 and a second damping plate 17 in a direction from the protection plate 15 to the civil air defense door body 1, a plurality of annular rubber members 18 are disposed between the first damping plate 16 and the second damping plate 17, and a compression spring 19 is disposed in each annular rubber member 18.
In this embodiment, the protection plate 15 is connected with the civil air defense door body 1 through a bolt and a nut, a damping device is arranged between the protection plate and the civil air defense door body 1, the damping device comprises a first damping plate 16 and a second damping plate 17, the first damping plate and the second damping plate are made of stainless steel materials, the civil air defense door body 1 and the protection plate 15 are combined through an adhesive, the annular rubber part 18 is a ring made of rubber parts, and a compression spring 19 is arranged in the ring.
The working principle of the invention is as follows: when an operator needs to close the civil air defense door, the civil air defense door body 1 is rotated towards the door frame 4 through the handle, in the rotating process, the balls 5 embedded in the top and the bottom of the civil air defense door body 1 contact the elastic deformation pad 7, in the closing rotating extrusion process, the elastic deformation pad 7 can generate deformation, thereby buffering partial impact force when the door is closed, meanwhile, the lug 8 arranged on the side surface of the civil air defense door body 1 can contact the buffer rubber plate 10, the deformation generated by the buffer rubber plate 10 can buffer a small amount of impact force, in the process of continuing to rotate the civil air defense door body 1, the buffer rubber plate 10 can extrude the buffer spring 11, the resilience force generated by the buffer spring 11 can buffer partial impact force again, through the double buffering effect of the buffer rubber plate 10 and the buffer spring 11, thereby the civil air defense door has good buffering performance and anti-seismic performance, and the service life of the civil air defense door can be prolonged, when the people's air defense door needs to be opened, the people's air defense door body 1 is pulled out from the door frame 4 through the handle, and in the pulling process, because the second connecting piece 13 is rotationally connected with the damping piece 14, in the rotating process, mechanical potential energy needs to be consumed, namely, the pulling force of the people's air defense door is buffered, so that the people's air defense door is opened or closed more stably.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (6)

1. The utility model provides an antidetonation people's air defense door, includes people's air defense door body (1), people's air defense door body (1) rotates through rotating piece (2) and connects on wall body (3), be equipped with on wall body (3) with door frame (4) that people's air defense door body (1) cooperation was used, its characterized in that: people's air defense door body (1) with between door frame (4), the top and the bottom of people's air defense door body (1) all are equipped with first buffer, keep away from the one end that rotates piece (2), the side of people's air defense door body (1) is equipped with second buffer, just people's air defense door body (1) back upper end with be equipped with the third buffer before wall body (3).
2. An earthquake-resistant civil air defense door according to claim 1, characterized in that: first buffer includes ball (5), ball (5) exceed half the position and imbed inside people's air defense door body (1) and pour integratively, the top and the bottom of people's air defense door body (1) all imbed two sets of ball (5), just the top lower extreme and the bottom upper end of door frame (4) all be equipped with ball (5) cooperate arc wall (6) that use, be equipped with in arc wall (6) with the inconsistent elastic deformation pad (7) of ball.
3. An earthquake-resistant civil air defense door according to claim 1, characterized in that: the second buffer device comprises a convex block (8), the convex block (8) is fixed on the side face of the civil air defense door body (1), a groove (9) matched with the convex block (8) is correspondingly formed in the door frame (4), a buffer rubber plate (10) is arranged in the groove (9), a plurality of groups of buffer springs (11) are arranged on the buffer rubber plate (10), and the buffer springs (11) are installed in the groove.
4. An earthquake-resistant civil air defense door according to claim 1, characterized in that: the third buffer device comprises a first connecting piece (12), one end of the first connecting piece (13) is hinged to the wall body (3), the other end of the first connecting piece (12) is hinged to a second connecting piece (13), the other end of the second connecting piece (13) is connected with a damping piece (14), and the damping piece (14) is fixed to the back face of the civil air defense door body (1).
5. An earthquake-resistant civil air defense door according to claim 4, characterized in that: the second connecting piece (13) is arranged in an L shape, the second connecting piece (13) is of an integrally formed structure, and the downward extending part of the second connecting piece (13) can penetrate through the damping piece (14) and is rotationally connected with the damping piece (14).
6. An earthquake-resistant civil air defense door according to claim 1, characterized in that: the outside both sides of people's air defense door body (1) all are equipped with one deck guard plate (15), guard plate (15) with be equipped with damping device between people's air defense door body (1), from guard plate (15) to the direction of people's air defense door body (1), damping device includes first shock attenuation board (16) and second shock attenuation board (17), be equipped with a plurality of annular rubber spare (18) between first shock attenuation board (16) and second shock attenuation board (17), every all be equipped with compression spring (19) in annular rubber spare (18).
CN202010451073.8A 2020-05-25 2020-05-25 Anti-seismic civil air defense door Pending CN111535718A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010451073.8A CN111535718A (en) 2020-05-25 2020-05-25 Anti-seismic civil air defense door

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010451073.8A CN111535718A (en) 2020-05-25 2020-05-25 Anti-seismic civil air defense door

Publications (1)

Publication Number Publication Date
CN111535718A true CN111535718A (en) 2020-08-14

Family

ID=71980762

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010451073.8A Pending CN111535718A (en) 2020-05-25 2020-05-25 Anti-seismic civil air defense door

Country Status (1)

Country Link
CN (1) CN111535718A (en)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN204531780U (en) * 2015-03-25 2015-08-05 戴海泉 Both arms hinge window fastener
CN105332583A (en) * 2015-11-11 2016-02-17 哈尔滨工程大学 Centrifugal speed control door closing device
CN205990861U (en) * 2016-08-25 2017-03-01 贵州瑞安达人防设备有限公司 A kind of closed guard gate's impact-proof structure
CN208106169U (en) * 2018-04-20 2018-11-16 杨昊霖 A kind of electromagnetic damping buffer hinge
CN208456415U (en) * 2018-04-27 2019-02-01 天津翔瀚人防工程防护设备有限公司 A kind of pin-connected panel protecting against shock closed guard gate
CN209510090U (en) * 2018-12-01 2019-10-18 上海海钊民防设备有限公司 A kind of shock resistance closed guard gate
CN209556831U (en) * 2018-10-19 2019-10-29 浙江众幸防护设备有限公司 Antidetonation closed guard gate

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN204531780U (en) * 2015-03-25 2015-08-05 戴海泉 Both arms hinge window fastener
CN105332583A (en) * 2015-11-11 2016-02-17 哈尔滨工程大学 Centrifugal speed control door closing device
CN205990861U (en) * 2016-08-25 2017-03-01 贵州瑞安达人防设备有限公司 A kind of closed guard gate's impact-proof structure
CN208106169U (en) * 2018-04-20 2018-11-16 杨昊霖 A kind of electromagnetic damping buffer hinge
CN208456415U (en) * 2018-04-27 2019-02-01 天津翔瀚人防工程防护设备有限公司 A kind of pin-connected panel protecting against shock closed guard gate
CN209556831U (en) * 2018-10-19 2019-10-29 浙江众幸防护设备有限公司 Antidetonation closed guard gate
CN209510090U (en) * 2018-12-01 2019-10-18 上海海钊民防设备有限公司 A kind of shock resistance closed guard gate

Similar Documents

Publication Publication Date Title
WO2019024552A1 (en) Self-resetting, friction pendulum three-dimensional seismic damping and isolation bearing
CN209556831U (en) Antidetonation closed guard gate
CN111535718A (en) Anti-seismic civil air defense door
CN111535717B (en) Self-buffering type anti-seismic civil air defense door
CN108252433B (en) A assembled wall body for taking precautions against earthquakes
CN212628357U (en) Wireless bluetooth headset box that charges convenient to carry
CN114562049A (en) Shock attenuation attenuator based on wisdom building
CN211397276U (en) Anti-impact civil air defense door structure convenient for fixing door leaf
CN210508961U (en) Indoor door capable of preventing hand clamping
CN217813031U (en) Intelligent household door
CN207863626U (en) Lock body inclined tongue buffer structure
CN112963080A (en) Aluminum alloy window with steering structure
CN214144136U (en) Movable board house structure with antidetonation function
CN214625968U (en) Outdoor low-voltage wire-outgoing cabinet with protective device
CN219398763U (en) Window breaker for defending oneself and escaping
WO2003093585A1 (en) An seismic isolator
CN106499278B (en) A kind of linkwork and door component
CN213584836U (en) Damping limiting base for installation of electric appliance cabinet
CN220395535U (en) Civil air defense sealing door with buffer structure
CN220151206U (en) Self-buffering shockproof civil air defense door
CN215520470U (en) Connecting mechanism of tractor door
CN217999437U (en) Effectual aluminum alloy door and window of antidetonation
CN217518536U (en) Impact-resistant civil air defense door
CN214800136U (en) High wireless communication module of security
CN217897679U (en) Anti-seismic heat-insulation civil air defense door

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
RJ01 Rejection of invention patent application after publication

Application publication date: 20200814

RJ01 Rejection of invention patent application after publication